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(No Model.)

G. H. WEBB.

PRESS POR MAKING BOLTS.

Patented Sept. 11, 1883.

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GEORGE H. VEBB, OF PAVV'IUOKET, RHODE ISLAND.

PRESS FOR MAKING BOLTS.

SPECIFICATION forming'` part of Letters Patent No. 284,694, dated September 11, 1883,

Application filed April l21,1883. (No model.)

To all whom it may concern:

Be it known that I, GEORGE H. WEBB, of Pawtucket, in the county of Providence, in the State of Rhode Island, have invented a neweand useful Improvement in Presses for Making Bolts and I declare the following to be a specification thereof, reference being had to the accompanying drawings.

Like letters indicate like parts.

Figure I shows partly in vertical section and partly in elevation the several parts of my invention. Figg2 is a perspective view of the sliding block and its bed. Figs. 3 and 4 are detail views. Fig. 5 is a vertical section on the line w of Fig. 2.

My invention relates to the presses used in bolt-manufacture to form the heads of bolts;

and it consists, first, of a screw-bolt adj usted to i' the top of the socket-bar of the plunger and engaging with a nut which is fastened to said plunger by screw bolts; and, secondly, in forming catch-boxes in the sliding block to receive the scale waste, and thereby prevent clogging, as hereinafter fully specified.

In presses as heretofore constructed there is liability of breakage or serious damage of the machine whenever the bolt to be headed has too much stock, or is not properly upset, or whenever the tool or die carrying the bolt is not carefully set in the sliding block. In

t such cases' the plunger cannot complete its downstroke, and, being arrested in its course by the obstruction, causes by its ponderous weight a breakage or distortion of some part of the machine, disabling or destroying its further use. I attach to the plunger screwbolts and nuts so ladjusted that in case of such obstruction the whole force of the shock or strain is received on the threads of said bolts and tears them from their connection.v

By this arrangement the breakage can happen only in this portion of the machine, where it can be conveniently, speedily, and cheaply repaired, and thus all liability of breakage orv upon the arms B B by the bars C O, as shown in Fig. l. The arms B B have a simultaneous vertical reciprocating motion derived from eccentrics upon the driving-shaft in the usual manner, but which are not shown in the drawings. The socket-bar D and its socket E are centrally fitted to the plunger and travel with it. The socket E carries the top die, F, wherein the head of the bolt is formed, as shown in dotted lines in Fig. I. The bottom die, 4Gr, containing an upset bolt, is fitted by the workman within the central opening of the block H, and is carried by said block H, sliding in its bed-piece I, to a position accurately centering with the top die, F, such ad justment being obtained by the adjustingscrew J ,which limits the advance of the block H. The bed I is permanently fastened to the base K of the press by the lugs L L. Thus far the description shows a press of ordinary construction. To these parts I add the following: A threaded nut, n, is bolted in several places to the top of the plungerA by the screw-bolts N N. A screw-bolt, O, engages with said nut Mand passes down throughacylindrical hole of the plunger A, and is ad-Y justed to the top of the socket-bar D. A check-nut, P, connes it in such contact with the socket-bar. Vhencver the plunger is stopped in its descent by any obstruction, the force of the slrockis received upon tliethreads of the bolt O and nut M, which, being the weakest parts subjected to such force, are broken or torn apart, thus saving the remaining portions of the machine from injury.

I form in the sliding block H a series of cavities or catch-boxes, a c, the' purpose of which is to receive the scales which fall from the bolt during the operation of heading, which waste material hitherto has fallen upon the surface of the slidingblock and worked into the bed I, clogging the sliding of the block H and increasing the friction and wear of said parts. Other advantages of this construction of the sliding block H with cavities are that theblock is much lightened by corthat the strength of the block js greatly n- 2. In a press for heading b0lts a sliding creased by the larger scale-surface of the eastblock, H, having catch-boxes (m, substantially ing. as described.

I claim as a novel and useful invention andV f 5 desire to secure by Letters Patent- GEORGE H. VEBB.

l. The screw-bolt O7 adjusted to the socketbar D and cheeked by the nut P, in eombinzr- Tituessesz tion with the nuts M, fastened to the plunger f GEORGE H. FOWLER, A by the bolt N, substantiallyv as and for the VARREN R. PERCE. Io purpose specified. 

